Grade 4 Music Theory, Unit 4, Lesson 2 of 5
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Augmented and diminished

Music theory, Intervals, 4 minutes

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A semitone bigger than major or perfect is augmented; a semitone smaller than minor or perfect is diminished. They appear once the lower note is not the tonic.

One semitone beyond

Both are six semitones
  • A semitone bigger than major or perfect: augmented.
  • A semitone smaller than minor or perfect: diminished.

In C major, F up to B is an augmented 4th, and B up to F a diminished 5th.

Quick check

A perfect 5th made a semitone smaller is:

The rest of this lesson and its 5 practice questions are in Plus.

Screen 1 of 4, free to read.

  • 5 exam-style questions, marked as you go, each with a worked solution
  • Anything you get wrong is saved to your flashcards